> There are no actually meaningful ways to get in touch with a service that can cause immense harm to your or your businesses reputation and trustworthiness - in similar ways that defamation can

How isn't this defamation, actually? Or at least negligent tortious interference? If people can get sued for honest reviews...

https://www.cbsnews.com/news/posting-a-negative-review-onlin...

If a customer posts a review that is factually inaccurate or contains accusations about your business that are untrue, you may have grounds to sue the online reviewer for defamation. - https://www.freshbooks.com/blog/can-you-sue-over-a-bad-revie...